On the last day of the four-day-long Chhath festival, devotees gathered on the bank of ghats across the country to perform the 'Usha Arghya' (prayers to the rising sun). In Delhi, devotees gathered at Yamuna banks, which has been in focus because of the toxic foam seen on the surface of the river. The pollution in the river has been a cause of concern for decades. A special discussion on how this issue can be addressed and solutions can finally be seen.